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NTN NA48390 machined ring needle roller bearing, NA series, case carburized steel construction. Open design without seals for high radial load capacity in limited axial space. Suitable for industrial applications requiring compact, high-capacity needle roller bearings.
MODEL NA48390
$539.20 Each
Prices are subject to change
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B (in)
5.3750
Bore type
Round
Bore Type
Round
Height
7.5
Length
7.5
Material
Case Carburized Steel
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
R (in)
0.1400
Type
Cone
Wi
1.6875 in
Technical Specifications
Type | Cone |
|---|---|
Bore Type | Round |
Material | Case Carburized Steel |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
|
| |
B | 5.3750 in136.525 mm |
|---|---|
Wi | 1.6875 in42.863 mm |
R | 0.1400 in3.600 mm |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.